Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Divisions of the Pharynx
Document related concepts
no text concepts found
Transcript
Divisions of the Pharynx Nasopharynx – Posterior to the nasal cavity and superior to the soft palate Oropharynx – Extends from soft palate superiorly to vallecula inferiorly. Laryngopharynx – Inferior to the tip of epiglottis to the cricopharyngeus Image courtesy of Tabby Kennedy, MD Hard palate Soft palate Sagittal Neck CT Tongue Sagittal View Image courtesy of Tabby Kennedy, MD Nasopharynx Oropharynx Sagittal Neck CT Laryngopharynx Esophagus Larynx Sagittal View Image courtesy of Tabby Kennedy, MD Sagittal Neck CT Vallecula Epiglottis Hyoid Bone Sagittal View Image courtesy of Tabby Kennedy, MD Sagittal Neck CT Lateral Neck Radiograph Vallecula Epiglottis Hyoid Bone Image courtesy of Tabby Kennedy, MD Lateral Neck Radiograph NP OP LP Larynx Esophagus Image courtesy of Tabby Kennedy, MD Lateral View – Barium Swallow Vallecula Epiglottis Aryepiglottic folds Hyoid Larynx Trachea Patients swallow barium which coats the mucosal surfaces of the pharynx Image courtesy of Tabby Kennedy, MD Lateral View – Barium Swallow Oropharynx Laryngopharynx Piriform recess Patients swallow barium which coats the mucosal surfaces of the pharynx Esophagus Image courtesy of Tabby Kennedy, MD Image courtesy of Tabby Kennedy, MD Frontal View – Barium Swallow Coronal Neck CT Coronal CT Neck Stylopharyngeus Styloid process – Note stylopharyngeus arises from medial surface Tonsils Pharyngeal – – Palatine – Lingual – Also known as adenoids Located on the roof of the nasopharynx Located on each side of the oropharynx between the pharyngeal arches Lymphoid tissue along the tongue base anterior to the vallecula Image courtesy of Tabby Kennedy, MD Sagittal CT Neck: Tonsils Pharyngeal Tonsils (adenoids) Lingual Tonsils Image courtesy of Tabby Kennedy, MD Axial CT Neck: Tonsils Palatine Tonsils Image courtesy of Tabby Kennedy, MD Axial CT Neck: Floor of the Mouth Structures Genioglossus Hyoglossus Lingual neurovascular bundle Coronal CT Neck: Floor of the Mouth Muscles Anterior belly of the digastric Geniohyoid Mylohyoid Axial CT Neck: Salivary Glands Parotid gland Sublingual gland Submandibular gland and duct* * Duct not seen, but courses along lateral hyoglossus muscle Skeletal Framework of the Larynx Hyoid Bone Arytenoid Thyroid Cartilage Cricoid Image courtesy of Tabby Kennedy, MD Axial CT Neck: Skeletal Framework of the Larynx Image courtesy of Tabby Kennedy, MD Thyroid Cartilage Hyoid Bone Axial View – Superior Arytenoid Axial View - Inferior Cricoid Axial CT Neck: Skeletal Framework of the Larynx Image courtesy of Tabby Kennedy, MD Larynx – Coronal and Sagittal Glottis: True vocal cords Coronal view Ventricle True Vocal Cords Image courtesy of Tabby Kennedy, MD Larynx – Coronal and Sagittal Supraglottis: above the glottis Vestibular (False) Folds Image courtesy of Tabby Kennedy, MD Larynx – Coronal and Sagittal Glottis: True vocal cords Image courtesy of Tabby Kennedy, MD Larynx – Coronal and Sagittal Subglottis: below the glottis, to the inferior border of cricoid Image courtesy of Tabby Kennedy, MD
